Characteristics of Muscle Activity in the Lower Extremity during Stepping over Various Obstacle

Lee, Han-Suk (이한숙); Seung-Beom Hong (홍승범); Ha-Nul Chin (진하늘); Ju-Li Choi⋅ (최주리); Seon Hee-Chang (선희창); Duk-Young Jeong (정덕영)

doi:10.13066/kspm.2019.14.4.55

Characteristics of Muscle Activity in the Lower Extremity during Stepping over Various Obstacle

Journal of the Korean Society of Physical Medicine
Abbr : J Korean Soc Phys Med
2019, 14(4), pp.55-62
DOI : 10.13066/kspm.2019.14.4.55
Publisher : The Korean Society of Physical Medicine
Research Area : Medicine and Pharmacy > Physical Therapy > Other physical therapy
Received : October 24, 2019
Accepted : November 5, 2019
Published : November 30, 2019

Lee, Han-Suk ¹, Seung-Beom Hong ², Ha-Nul Chin ², Ju-Li Choi⋅ ², Seon Hee-Chang ³, Duk-Young Jeong ⁴

¹을지대학교
²을지대학교 물리치료학과
³을지대학교(성남캠퍼스)
⁴성남고령친화종합체험관

Accredited

ABSTRACT

PURPOSE: This study examined the muscle activity while stepping over obstacles with various heights and widths to provide basic data for training and preventing falls. METHODS: Fifteen normal young adults (seven males and eight females) were recruited. The participants walked on a 5m walkway with six obstacles. The heights of obstacles were 0%, 10%, and 40% of the subject's leg length, and the width of the obstacles was 7cm and 14cm. The participants traversed the course twice per obstacle. The muscle activities of the soleus, tibialis anterior (TA), vastus medialis (VM), and vastus lateralis (VL) were measured using surface electromyography. A Mann-Whitney test and Kruskal- Wallis test were used to examine the differences between obstacles. RESULTS: The muscle activities of the VL and the soleus of the stance leg and lead leg after crossing over the obstacles increased with increasing width, and there were significant differences in muscle activities between obstacle width (p<.05) except for the muscle activity of TA of the stance leg after crossing over the obstacles. A significant difference in muscle activities was observed according to the height of the obstacles with 14 cm (p<.05) except for the muscle activity of the VL, soleus of the leading leg, and TA of the stance leg. CONCLUSION: The role of the VL and Soleus increased with increasing obstacle width, and the overall muscle activities of the lower extremities increased with increasing obstacle height. These results can be used to suggest a program to prevent falls.

KEYWORDS

Muscle activity, Electromyography, Walking

Citation status

* References for papers published after 2023 are currently being built.

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This paper was written with support from the National Research Foundation of Korea.

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Journal of the Korean Society of Physical Medicine 2023 KCI Impact Factor : 0.45

Characteristics of Muscle Activity in the Lower Extremity during Stepping over Various Obstacle

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* References for papers published after 2023 are currently being built.

Journal of the Korean Society of Physical Medicine 2023 KCI Impact Factor : 0.45

Characteristics of Muscle Activity in the Lower Extremity during Stepping over Various Obstacle

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KEYWORDS

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